KSU Biology 198 Exam 2 Questions With 100% Correct Answers

KSU Biology 198 Exam 2 Questions With 100% Correct Answers Ecology - answerThe study of interactions between life forms and their environment. Ecosystem - answerAll living organisms in an environment plus the physical and chemical environments in which they live. GPP (Gross Primary Productivity) - answerAll the sunlight that hits a given area, primary producers use it to grow and reproduce, then converted to NPP NPP - answerThe usable energy left over for consumers is called ____. It helps determine how many trophic levels an ecosystem can hold. Entropy - answerRandomness Second - answer______ Law of Thermodynamics: as energy is passed on (converted) some is lost as heat. This increases entropy. Nutrients - answerWhat is cycled in biogeochemical cycles? Nutrients - answer_______ could not cycle if energy was not present. Autotroph - answerA _______ is a producer, meaning it makes its own "food" by converting energy into a usable form for the consumers to use. Nutrients could not cycle without this energy flow. Heterotroph - answerA ________ is a consumer. If it didn't consume producers, no nutrients would be passed on. Producer - answerAn organism that makes its own food. Decomposer - answerAn organism that breaks down dead and decaying organisms. Consumer - answerAn organism that eats other organisms to gain energy. Trophic - answerA ______ level groups organisms into how much energy is available to them and how much they have. Food Chain - answerThe linear relationships of feeding. Food Web - answerAll relationships in regard to eating habits. Includes decomposers. rainforest - answerWhat biome has the highest NPP? Population - answera group of the same species living within the same area. age structure - answerScientists study __________ because the proportion of individuals in "childbearing age" is directly related to the grown of the population. Sex Ratio - answerThe idea that if there are more men than women, less babies will be born. Where as if there were more women, more babies would be born and the population would be able to grow and survive. Population Distribution - answerThe idea that if a species exists in several different areas, then the species will be very successful is called ___________. Per Capita growth rate - answer=b-d how many individuals are added to the population per individual already living. exponential - answerG=rN is the equation for __________ growth Carrying Capacity - answer_________ limits the population growth. Logistic growth hits carrying capacity and the population levels off. Logistic Curve - answerA ___________ describes the growth of a population when the effects of the carrying capacity can be seen. something is limiting the population size, the amount of NPP available. G=rN(K-N/K) When it reaches carrying capacity, no more growth occurs. Density-dependent - answerExamples of this kind of factor includes biological, predation, inter and intra specific competition, accumulation of waste. Density-independent - answerDensity-________ factors influence morality in a population regardless of population density. These are physical or chemical (abiotic factors) such as natural disasters. 1 - answerHigh death rate in older organisms is a Type ___ Survivorship. 2 - answerHigh death rate in all ages of organisms is a Type ___ Survivorship. 3 - answerHigh death rate in younger organisms is a Type ___ Survivorship. Interspecific - answerA ___________ interaction is between different species. intraspecific - answerA ___________ interaction is between the same species. It helps with population growth because it can cause reproduction but also competition.